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Finding the Fourth Proportional to 132,351.38, 182,644.31 and 71,920.88

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Solution

The fourth proportional to 132,351.38, 182,644.31 and 71,920.88 is: 99,250.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,351.38 : 182,644.31 = 71,920.88 : x
  2. Step 2: Convert to fraction form
    132,351.38/182,644.31 = 71,920.88/x
  3. Step 3: Cross multiply
    132,351.38x = 182,644.31 × 71,920.88
  4. Step 4: Simplify right side
    132,351.38x = 13,135,939,142.59
  5. Step 5: Solve for x
    x = 13,135,939,142.59/132,351.38
  6. Step 6: Final answer
    x = 99,250.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.